Brent Betterly, 24, Jared Chase, 24, and Brian Church, 20, were each charged with four felony counts that included material support for terrorism, conspiracy to commit terrorism and other related charges, the station reported.

Authorities accused the three of plotting to firebomb Chicago Mayor Rahm Emanuel's home, the station reported.

Other alleged targets included police stations and the Prudential Building campaign headquarters of President Barack Obama.

Two other men were arraigned Monday for alleged crimes during the summit.

Mark Neiweem is charged with two counts related to explosives. Authorities say he met with someone in a forest preserve to obtain materials to make a pipe bomb. Sebastian Senakiewicz is charged with four counts of falsely making a terrorist threat, the station reported.